JP2010167204A - Ultrasonic treatment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic treatment system in which rotational manipulation means, a sheath, a probe body and a driving member are linked to each other without other members, and lateral oscillation of the probe body is not directly transmitted to the sheath or the like. <P>SOLUTION: In the ultrasonic treatment system 1, a projection portion 42 of a rubber lining portion 41 linking a rotational manipulation knob 83, a probe body 30, a sheath 52 and a driving pipe 53 is integrated with the probe body 30, whereby the rotational manipulation knob 83, the probe body 30, the sheath 52 and the driving pipe 53 can be linked. In addition, the projection portion 42 of the rubber lining portion 41 linking the rotational manipulation knob 83, the probe body 30, the sheath 52 and the driving pipe 53 is made of a rubber which is an elastic member, so that lateral oscillation of the probe body 30 can be prevented from directly transmitting to the sheath 52, the driving pipe 53 and the rotational manipulation knob 83. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an ultrasonic treatment apparatus that performs treatment such as incision, excision, or coagulation of a living tissue using ultrasonic waves.

  In general, in an ultrasonic treatment apparatus that performs incision, excision, or coagulation of a living body using ultrasonic waves, an operation unit is connected to a proximal end side of an elongated insertion unit that is inserted into a body cavity. An ultrasonic transducer that generates ultrasonic vibrations is disposed in the operation unit. A treatment portion for treating living tissue is disposed at the distal end portion of the insertion portion.

  The insertion portion has an elongated circular tubular sheath. A rod-shaped probe main body is inserted into the sheath. An ultrasonic transducer is connected to the proximal end side of the probe body. The ultrasonic vibration generated by the ultrasonic transducer is transmitted to the probe tip on the tip side of the probe body.

  The treatment section is provided with a jaw opposite the probe tip. The proximal end portion of the jaw is rotatably supported by the distal end portion of the sheath via a support shaft. Drive means for driving the jaws is inserted into the sheath so as to be able to advance and retract in the axial direction.

  An operation handle is disposed in the operation unit. The drive means is driven to advance and retreat in the axial direction in accordance with the operation of the operation handle, and the jaw is opened / closed with respect to the probe tip in conjunction with the operation of the drive means.

  At this time, the living tissue is grasped between the probe tip and the jaw in accordance with the jaw closing operation. In this state, ultrasonic vibration from the ultrasonic transducer is transmitted to the probe tip through the probe body, so that treatment such as incision, excision, or coagulation of living tissue using ultrasonic waves is performed. It has become.

  In addition, the operation unit is provided with a rotation operation means such as a rotation operation knob for rotating the treatment unit around the axis by an operator's operation. When the operator rotates the rotation operation knob, the rotation torque is transmitted to the sheath, the probe main body, the jaw, the probe distal end portion, and the driving means, thereby rotating. FIG. 14 is a view showing a state in which a conventional rotary operation knob is attached. As shown in FIG. 14, the rotation operation knob 205, the sheath 200, the probe main body 201, and the driving means 203 are provided with a through hole at a common position. By inserting a metal pin 206 or the like into the through hole, the rotation operation knob 205, the sheath 200, the probe main body 201, and the driving means 203 are integrally connected. The through hole provided in the driving unit 203 is formed in a long hole shape so that the driving unit 203 can slide in the axial direction.

  In the ultrasonic surgical forceps device of Patent Document 1, the through hole is provided at a common position of the probe main body, the sheath, the driving means, and the rotating operation means. By inserting a metal pin or the like into the through hole, the probe main body, the sheath, the driving means, and the rotation operation means are integrally connected.

  Moreover, in the ultrasonic surgical apparatus of Patent Document 2, the through hole is provided at a common position of the probe main body and the sheath. The probe main body and the drive means are connected by inserting a metal pin or the like into the through hole.

JP-A-11-192237 Special Table 2000-509635

  In the ultrasonic surgical forceps device of Patent Document 1, the rotation operation means, the sheath, the probe main body, and the drive means (drive member) are coupled by another member such as a metal pin. For this reason, a metal pin etc. may drop by the malfunction in a manufacturing process, the ultrasonic vibration in use, etc., and the function of an apparatus may fall. In addition, since a metal pin is used for coupling, there is a problem in that abnormal noise is generated when the lateral vibration of the probe body is directly transmitted to the sheath, the driving means, and the rotating operation means.

  Even in the ultrasonic surgical apparatus of Patent Document 2, the probe main body and the driving means are coupled by a metal pin or the like which is a separate member.

  The present invention has been made paying attention to the above-mentioned problems. The object of the present invention is to connect the rotation operation means, the sheath, the probe main body, and the drive member without providing separate members, and to perform lateral vibration of the probe main body. Is to provide an ultrasonic treatment apparatus that is not directly transmitted to the sheath, the drive member, and the rotation operation means.

  In order to achieve the above object, the invention of claim 1 is characterized in that a tubular sheath, a probe main body that is inserted into the sheath, ultrasonic waves are transmitted, and a distal end portion of the sheath are rotatable. A jaw to be attached; a probe tip provided at the tip of the probe main body; and a slidable insertion along the axial direction of the sheath through the sheath; A drive member that opens and closes the jaw with respect to the probe tip by a moving operation, and an operation that rotates the sheath, the probe body, the jaw, the probe tip, and the drive member around the axis of the sheath. Rotation operation means, provided on the probe main body, and elastically deformed when the probe main body is assembled into the sheath, and a normal assembly position By elastically restored to its original shape, the sheath, said probe body, an ultrasonic treatment apparatus characterized by comprising a connecting means for integrally connecting said drive means and said rotating operation unit.

  The invention according to claim 2 is characterized in that the connecting means is formed of a rubber lining on the outer peripheral surface of the probe main body, and includes one or more protrusions protruding outward in the radial direction of the probe main body. The ultrasonic treatment apparatus according to claim 1, wherein the ultrasonic treatment apparatus engages with the sheath, the driving unit, and the rotation operation unit.

  The invention according to claim 3 is the ultrasonic treatment apparatus according to claim 2, wherein the protrusion has a cut at a portion opposite to the insertion direction of the probe main body.

  The invention according to claim 4 is the ultrasonic treatment apparatus according to claim 2, wherein the protrusion has a cavity in the center.

  In the ultrasonic treatment apparatus according to any one of claims 1 to 4, the probe body is provided with a connecting means for connecting the rotation operation means, the probe body, the sheath, and the drive member. Thereby, a rotation operation means, a probe main body, a sheath, and a drive member can be connected, without providing another member.

  According to the present invention, the rotation operation means, the sheath, the probe body, and the drive member are connected without providing a separate member, and the lateral vibration of the probe body is not directly transmitted to the sheath, the drive means, and the rotation operation means. A sonic treatment device can be provided.

FIG. 1 is a perspective view showing a schematic configuration of an ultrasonic treatment apparatus according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view showing an internal structure of a main body case of the ultrasonic treatment apparatus according to the first embodiment. FIG. 3 is a side view showing the probe of the ultrasonic treatment apparatus according to the first embodiment in a partial cross section. FIG. 4 is a cross-sectional view showing the transducer unit integrated probe of the ultrasonic treatment apparatus according to the first embodiment. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a side view showing a partial cross section of the distal end portion of the insertion portion of the ultrasonic treatment apparatus according to the first embodiment. FIG. 7 is a cross-sectional view showing a connecting portion between the insertion portion and the operation portion of the ultrasonic treatment apparatus according to the first embodiment. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is a cross-sectional view showing a state in which a probe main body is inserted into a drive pipe of the ultrasonic treatment apparatus according to the first embodiment. FIG. 10 is a cross-sectional view illustrating a state in which the probe main body of the ultrasonic treatment apparatus according to the first embodiment is coupled to a drive pipe, a sheath, and a rotary operation knob. FIG. 11 is a cross-sectional view showing a connecting portion between an insertion portion and an operation portion of an ultrasonic treatment apparatus according to a second embodiment of the present invention. FIG. 12 is a cross-sectional view illustrating a state in which a probe main body is inserted into a drive pipe of the ultrasonic treatment apparatus according to the second embodiment. FIG. 13 is a cross-sectional view illustrating a state in which the probe main body of the ultrasonic treatment apparatus according to the second embodiment is coupled to a drive pipe, a sheath, and a rotary operation knob. FIG. 14 is a cross-sectional view showing a connecting portion between an insertion portion and an operation portion of a conventional ultrasonic treatment apparatus.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing the overall configuration of the ultrasonic treatment apparatus 1 according to this embodiment.

  As shown in FIG. 1, the ultrasonic treatment apparatus 1 includes an insertion portion 2 for insertion into a body cavity, and an operation portion 3 connected to the proximal end side of the insertion portion 2. A treatment section 4 that performs ultrasonic treatment of the affected area is provided at the distal end of the insertion section 2.

  FIG. 2 is a diagram showing the internal structure of the operation unit 3. As shown in FIG. 2, the operation unit 3 has a main body case 10 formed of an insulating material. A transducer unit integrated probe 11 is inserted into the main body case 10. The transducer unit integrated probe 11 includes a transducer unit 12 and a probe 13. The transducer unit 12 includes an ultrasonic transducer 20 and a horn 21. The ultrasonic vibrator 20 is formed by a piezoelectric element that converts current into ultrasonic vibration, and generates ultrasonic waves. The ultrasonic transducer 20 has a plus electrode 22a and a minus electrode 22b, and is alternately arranged between piezoelectric elements in which the same poles are stacked. Further, an insulating tube 150 (see FIG. 4), which will be described later, is provided so that the plus electrode 22a and the minus electrode 22b are not short-circuited. A cone-shaped horn 21 for expanding the amplitude of the ultrasonic vibration is disposed on the distal end side of the ultrasonic vibrator 20. The horn 21 includes a flange portion 34 at the base end portion. A back mass 23 is disposed on the proximal end side of the ultrasonic transducer 20.

  A cable 25 that supplies current from the power supply main body 5 (see FIG. 1) to the ultrasonic transducer 20 is connected to the base end side of the main body case 10. The cable 25 is attached to the main body case 10 by connecting the bend stopper 24 to the main body case 10. Inside the cable 25, a plus connection cord 26a and a minus connection cord 26b are provided. The positive connection cord 26a is connected to the positive electrode 22a of the ultrasonic transducer 20 through a positive electrical contact 27a, and the negative connection cord 26b is connected to the negative electrode 22b of the ultrasonic transducer 20 through a negative electrical contact 27b.

  FIG. 3 is a view showing the appearance of the probe 13. The probe 13 is designed so that the entire length is an integral multiple of a half wavelength of ultrasonic vibration. The probe 13 has a metal rod-like probe main body 30 and a small diameter portion 31 that is provided on the proximal end side of the probe main body 30 and has a smaller diameter than the probe main body 30. As shown in FIG. 4, through holes 35 and 36 are provided in the center of the ultrasonic transducer 20 and the horn 21 of the transducer unit 12, respectively. A cylindrical insulating tube 150 having an insulating tube hole 151 is inserted into the through hole 35 of the ultrasonic transducer 20. The insulating tube hole 151 and the through hole 36 are formed to have substantially the same diameter as the small diameter portion 31 of the probe 13, and the small diameter portion 31 can be inserted into the insulating tube hole 151 and the through hole 36. The small-diameter portion 31 is set to a length that extends to the outside of the ultrasonic transducer 20 while being inserted through the insulating tube hole 151 and the through-hole 36. The positive electrode 22a and the negative electrode 22b are not in contact with each other. A male screw portion 31 a is formed in the extending portion of the small diameter portion 31. Further, the back mass 23 is formed with a screw hole 31b that is screwed into the male screw portion 31a of the small diameter portion 31. When the transducer unit integrated probe 11 is formed, the small-diameter portion 31 of the probe 13 is sequentially inserted into the through hole 36 of the horn 21 and the insulating tube hole 151 of the insulating tube 150. Then, the ultrasonic vibrator 20 and the horn 21 are assembled and fixed to the probe 13 by screwing the male screw portion 31 a of the small diameter portion 31 into the screw hole 31 b of the back mass 23. Thereby, the transducer unit integrated probe 11 is formed.

  As shown in FIG. 2, the main body case 10 is provided with a cylindrical vibrator housing portion 10 a that houses the vibrator unit 12. A circular groove 39 is provided on the inner peripheral surface of the vibrator housing portion 10a. The flange portion 34 of the horn 21 is connected to the groove portion 39 via the inner ring 38. Thereby, the transducer unit integrated probe 11 is attached to the main body case 10.

  As shown in FIG. 3, the probe main body 30 has a rubber lining 41 as a connecting means. The rubber lining 41 is formed by placing a rubber member in a mold and applying heat to form a predetermined shape, and at the same time, firmly welding the rubber member to the outer peripheral surface of the probe main body 30. As shown in FIGS. 3 and 5, the rubber lining portion 41 includes a rubber ring 41 a and one or more (two in the present embodiment) protruding outward in the radial direction of the probe body 30 on the outer peripheral surface of the rubber ring 41 a. ) Is provided. The protrusion 42 is provided at the position of the node of the ultrasonic vibration, and the shape of the protrusion 42 is restricted even when a force is applied in the circumferential direction of the probe main body 30. Further, the protrusion 42 is provided with a substantially V-shaped notch 43 at the root portion of the end surface (part) opposite to the insertion direction of the insertion portion 2 of the ultrasonic treatment apparatus 1. By providing the notch 43, when a force is applied to the projection 42 in the direction opposite to the insertion direction of the insertion portion 2, the projection 42 is easily bent in the direction opposite to the insertion direction of the insertion portion 2 (base end side of the probe main body 30). It has become. The protrusions 42 do not necessarily have to be provided with the notches 43 as long as the protrusions 42 are deformed when a force is applied in the axial direction of the probe main body 30.

  A probe tip 32 is provided at the tip of the probe body 30. The ultrasonic vibration generated by the ultrasonic vibrator 20 is transmitted to the probe tip 32 through the probe main body 30. The probe main body 30 has a reduced axial cross-sectional area at several points of ultrasonic vibration nodes in the middle of the axial direction so that the probe tip 32 can obtain the amplitude necessary for the treatment. Further, the probe main body 30 has vibration absorbing members 45 at several positions of vibration node positions in the middle of the axial direction. The vibration absorbing member 45 is formed by the same manufacturing method as the rubber lining portion 41.

  FIG. 6 is a diagram illustrating a configuration of the distal end portion of the insertion portion 2. As shown in FIG. 6, the insertion portion 2 includes a sheath main body 50 formed of a cylindrical body, and a jaw 51 disposed on the distal end side of the sheath main body 50. The sheath body 50 includes a cylindrical metal sheath 52 that is an outer cylinder, and a cylindrical metal drive pipe (drive member) 53 that is an inner cylinder. The drive pipe 53 is inserted in the sheath 52 so as to be slidable in the axial direction. The probe 13 is inserted into the drive pipe 53. Interference between the probe 13 and the drive pipe 53 is prevented by a vibration absorbing member 45 (see FIG. 3).

  As shown in FIG. 6, the proximal end portion of the jaw 51 is rotatably attached to the distal end portion of the sheath 52 via a fulcrum pin 57. When the probe 13 and the sheath body 50 are assembled, the jaw 51 is disposed at a position facing the probe tip 32 of the probe 13 so that it can mesh with the probe tip 32. The jaw 51 and the probe tip 32 constitute the treatment section 4 of the ultrasonic treatment apparatus 1.

  In the vicinity of the fulcrum pin 57 at the base end portion of the jaw 51, a connecting pin insertion hole 65 is formed. A connecting pin 66 for connecting the jaw 51 and the drive pipe 53 is mounted in the connecting pin insertion hole 65. As a result, the driving pipe 53 moves back and forth in the axial direction, whereby the driving force of the driving pipe 53 is transmitted to the jaw 51 via the connecting pin 66. Then, the jaw 51 is rotationally driven about the fulcrum pin 57, and the jaw 51 performs an opening / closing operation with respect to the probe distal end portion 32.

  As shown in FIG. 1, the operation unit 3 includes a fixed handle 80, a movable handle 82, and a rotation operation knob 83 as rotation operation means. Between the front end surface of the fixed handle 80 and the main body case 10, a switch holding portion 85 is provided on the front end surface side. A plurality of (two in this embodiment) switches 86 are attached to the switch holding portion 85. The treatment function (for example, coagulation, incision, etc.) of the treatment section 4 of the ultrasonic treatment apparatus 1 can be selected by the switch 86.

  As shown in FIG. 2, an insertion hole 90 for inserting the movable handle 82 is provided in the wall surface on the base end face side of the fixed handle 80. A movable handle 82 is inserted into the main body case 10 from the insertion hole 90. A movable handle 82 is rotatably attached to the main body case 10 by a fixed pin 94. The movable handle 82 has a U-shaped arm portion 91 at the top. The arm portion 91 is attached to the drive pipe 53 via a pin (not shown).

  Finger hooks 95 and 96 are provided at the lower ends of the fixed handle 80 and the movable handle 82, respectively. The movable handle 82 is rotated about the fixed pin 94 by placing the finger on the finger rests 95 and 96, and the movable handle 82 is opened and closed with respect to the fixed handle 80. By opening and closing the movable handle 82 with respect to the fixed handle 80, an operating force is transmitted to the drive pipe 53 connected to the arm portion 91 of the movable handle 82, and the drive pipe 53 moves back and forth in the axial direction. In conjunction with this, the jaw 51 opens and closes the probe tip 32.

  FIG. 7 is a view showing an attachment state of the rotary operation knob 83 attached to the main body case 10. As shown in FIG. 7, the rotation operation knob 83 is attached to the main body case 10 so as to be rotatable around the axis about the axis of the sheath 52. As shown in FIG. 7, the rotation operation knob 83 is disposed on the outer peripheral side of the sheath 52. The rotary operation knob 83 is assembled integrally with the probe main body 30, the drive pipe 53 and the sheath 52. Here, a connection structure between the rotation operation knob 83 and the probe main body 30, the drive pipe 53, and the sheath 52 will be described.

  As shown in FIGS. 7 and 8, one or more (two in this embodiment) slide holes 71, fixing holes 70, and fixings are provided at the base end portions of the drive pipe 53, the sheath 52, and the rotation operation knob 83, respectively. A groove 115 is provided at a position corresponding to the protruding portion 42 of the rubber lining portion 41. The slide hole 71 is formed in a long hole shape extending in the axial direction of the probe main body 30 longer than the thickness of the projection 42 (the axial dimension of the probe main body 30). Further, the fixing hole 70 and the fixing groove 115 are formed in the axial direction of the probe main body 30 so as to have the same dimension as the thickness of the protruding portion 42 so that the protruding portion 42 can be engaged.

  The outer diameter of the rubber ring 41 a of the rubber lining portion 41 is set smaller than the inner diameter of the drive pipe 53. Further, the outer diameter of the rubber lining portion 41 including the protruding portion 42 (the dimension between the end surfaces of the pair of protruding portions 42) is larger than the inner diameter of the drive pipe 53 in a state where no force is applied, that is, in a state of elastic recovery. The inner diameter of the fixed groove 115 of the rotation operation knob 83 (the dimension between the bottom surfaces of the pair of fixed grooves 115) is set to be approximately the same.

  When connecting the probe main body 30 to the drive pipe 53, the sheath 52, and the rotation operation knob 83, the protrusion 42 of the rubber lining portion 41 is inserted through the slide hole 71 of the drive pipe 53 and the fixing hole 70 of the sheath 52 in this order. Engage with the fixed groove 115 of the rotary operation knob 83. Here, since the slide hole 71 of the drive pipe 53 is formed in a long hole shape along the axial direction, the drive pipe 53 can slide in the axial direction even when the drive pipe 53 is attached to the probe body 30. It has become.

  As described above, the probe main body 30, the drive pipe 53, the sheath 52, and the rotation operation knob 83 are assembled together. Accordingly, when the rotation operation knob 83 is rotated, the assembly unit of the probe main body 30, the sheath 52, and the drive pipe 53 inside the main body case 10 is rotated together with the rotation operation knob 83 in the direction around the axis. It is like that. In conjunction with this operation, the probe tip 32 and the jaw 51 are also rotationally driven integrally with the probe main body 30, the sheath 52 and the drive pipe 53 in the direction around the axis.

  Next, the operation of the ultrasonic treatment apparatus 1 according to this embodiment will be described.

  When the ultrasonic treatment apparatus 1 according to this embodiment is used, the movable handle 82 is opened and closed with respect to the fixed handle 80. By opening and closing the movable handle 82 with respect to the fixed handle 80, an operating force is transmitted to the drive pipe 53 connected to the arm portion 92 of the movable handle 82, and the drive pipe 53 moves back and forth in the axial direction. In conjunction with this, the jaw 51 opens and closes the probe tip 32.

  Further, in the ultrasonic treatment apparatus 1 of the present embodiment, the probe main body 30, the sheath 52, the drive pipe 53, and the rotation operation knob 83 are integrally assembled by the protruding portion 42 of the rubber lining portion 41. Accordingly, when the rotation operation knob 83 is rotated, the assembly unit of the probe main body 30, the sheath 52, and the drive pipe 53 inside the main body case 10 is rotated together with the rotation operation knob 83 in the direction around the axis. . In conjunction with this operation, the probe tip 32 and the jaw 51 are also rotationally driven integrally with the probe main body 30, the sheath 52 and the drive pipe 53 in the direction around the axis. Even when the probe main body, the drive pipe 53, the sheath 52, and the rotation operation knob 83 are assembled together, the drive pipe 53 can slide in the axial direction.

  Here, the protrusion 42 of the rubber lining 41 that connects the rotation operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 is formed integrally with the probe main body 30. Thereby, the rotation operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 are connected without providing a separate member.

  The connecting means for connecting the rotary operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 is formed of rubber which is an elastic member. This prevents the lateral vibration of the probe body 30 from being directly transmitted to the sheath 52, the drive pipe 53, and the rotation operation knob 83.

  Next, an assembling operation for connecting the probe main body 30 to the rotation operation knob 83, the sheath 52, and the drive pipe 53 will be described with reference to FIGS. First, the probe main body 30 is inserted into the drive pipe 53 from the proximal end side of the drive pipe 53. The protrusion 42 of the rubber lining 41 first contacts the base end surface of the drive pipe 53, and is bent by elastic deformation in the direction of the cut 43, that is, the base end side of the probe body 30 (a direction to avoid interference with the sheath side). . At the time of insertion, the protrusion 42 of the rubber lining portion 41 receives force from the inner wall of the drive pipe 53 in the direction opposite to the insertion direction of the insertion portion 2. Since the protrusion 42 is provided with a notch 43, when a force is applied in the direction opposite to the insertion direction of the insertion portion 2, the protrusion 42 is opposite to the insertion direction of the insertion portion 2 as shown in FIG. 9. Elastically deforms in a bent state. For this reason, the probe main body 30 is bent in the direction opposite to the insertion direction of the insertion portion 2 and the bent portion of the protrusion 42 is kept in pressure contact with the inner peripheral surface of the drive pipe 53. It is inserted into the inside.

  When the probe body 30 is further inserted into the drive pipe 53, the protrusion 42 of the rubber lining portion 41 fixes the fixing hole 70 of the sheath 52, the slide hole 71 of the drive pipe 53, and the rotation operation knob 83. At the time when the groove 115 is inserted to the normal assembly position, there is no pressing force for pressing from the inner wall of the drive pipe 53 in the direction opposite to the insertion direction of the insertion portion 2. For this reason, the projection part 42 is elastically restored from the state bent in the direction opposite to the insertion direction of the insertion part 2 to the original shape as shown in FIG. Then, the projecting portion 42 is inserted into the slide hole 71, so that the drive pipe 53 is attached to the probe main body 30. Subsequently, when the protrusion 42 is engaged with the fixing hole 70, the sheath 52 is connected to the probe main body 30, and when the protrusion 42 is engaged with the fixing groove 115, the rotation operation knob 83 is connected to the probe main body 30. Is done.

  Therefore, the ultrasonic treatment apparatus 1 having the above configuration has the following effects. That is, in the ultrasonic treatment apparatus 1 according to the present embodiment, the protrusion 42 of the rubber lining 41 that connects the rotary operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 is formed integrally with the probe main body 30. ing. Thereby, the rotation operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 can be connected without providing a separate member.

  Further, the protrusion 42 of the rubber lining 41 that connects the rotation operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 is formed of rubber that is an elastic member. Thereby, it is possible to prevent the lateral vibration of the probe main body 30 from being directly transmitted to the sheath 52, the drive pipe 53, and the rotation operation knob 83.

  Further, since the notch 43 is provided in the protruding portion 42, the pressing portion 42 bends in the direction opposite to the inserting direction of the inserting portion 2 when a pressing force is applied in the opposite direction to the inserting direction of the inserting portion 2. For this reason, when the probe main body 30 is inserted into the drive pipe 53, the probe main body 30 is elastically deformed into a shape in which the protrusion 42 is bent in the direction opposite to the insertion direction of the insertion section 2. It is inserted inside. Then, when the probe main body 30 is inserted into the drive pipe 53 and the protrusion 42 is inserted to the positions of the fixing hole 70 of the sheath 52, the slide hole 71 of the driving pipe 53, and the fixing groove 115 of the rotation operation knob 83, It is designed to return elastically to its original shape. Thereby, the operation | work which attaches the drive pipe 53, the sheath 52, and the rotation operation knob 83 to the probe main body 30 can be performed easily. By providing the notch 43 so that the protrusion 42 is easily bent in the direction opposite to the insertion direction of the insertion portion 2, the workability of the operation of connecting the sheath 52, the probe main body 30, the drive pipe 53 and the rotation operation knob 83 is improved. be able to.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, the configuration of the ultrasonic treatment apparatus 1 of the first embodiment is changed as follows. In addition, the same code | symbol is attached | subjected about the part same as 1st Embodiment, and the description is abbreviate | omitted.

  The probe 13 of the ultrasonic treatment apparatus according to this embodiment includes a metal rod-like probe body 30. The probe main body 30 has a rubber lining 41. As shown in FIG. 11, the rubber lining portion 41 is provided with one or more (two in this embodiment) protrusions 42 protruding outward in the radial direction of the probe main body 30. The protrusion 42 is provided at the position of the node of the ultrasonic vibration, and the shape of the protrusion 42 is restricted even when a force is applied in the circumferential direction of the probe main body 30. Further, a cavity 125 penetrating in the circumferential direction of the probe main body 30 is provided at the center of the protrusion 42. By providing the cavity 125, when a force is applied inward in the radial direction of the probe main body 30, the protrusion 42 is easily contracted inward in the radial direction of the probe main body. The protrusions 42 do not necessarily have to be provided with the cavity 125 as long as the protrusions 42 are deformed when a force is applied in the radial direction of the probe main body 30.

  Next, the operation of the ultrasonic treatment apparatus according to this embodiment will be described.

  An assembling operation for connecting the probe main body 30 to the rotation operation knob 83, the sheath 52, and the drive pipe 53 will be described with reference to FIGS. First, the probe main body 30 is inserted into the drive pipe 53 from the proximal end side of the drive pipe 53. The protrusion 42 of the rubber lining 41 first contacts the proximal end surface of the drive pipe 53 and is elastically deformed so as to shrink inward in the radial direction of the probe main body 30 (in a direction avoiding interference with the sheath side). At the time of insertion, the protrusion 42 of the rubber lining portion 41 receives a force inward in the radial direction of the probe main body 30 from the inner wall of the drive pipe 53. Since the protruding portion 42 is provided with the cavity 125, when the force is applied inward in the radial direction of the probe main body 30, the protruding portion 42 is contracted inward in the radial direction of the probe main body 30 as shown in FIG. It will elastically deform. Therefore, the probe main body 30 has the projection 42 contracted radially inward of the probe main body 30, and the contracted portion of the projection 42 remains pressed against the inner peripheral surface of the drive pipe 53. It is inserted into the inside.

  When the probe body 30 is further inserted into the drive pipe 53, the protrusion 42 of the rubber lining portion 41 fixes the fixing hole 70 of the sheath 52, the slide hole 71 of the drive pipe 53, and the rotation operation knob 83. When the groove 115 is inserted to the normal assembly position, there is no pressing force to press the probe body 30 radially inward from the inner wall of the drive pipe 53. For this reason, the protrusion 42 is elastically restored in a state where it returns to the original shape as shown in FIG. Then, the projecting portion 42 is inserted into the slide hole 71, so that the drive pipe 53 is attached to the probe main body 30. Subsequently, when the protrusion 42 is engaged with the fixing hole 70, the sheath 52 is connected to the probe main body 30, and when the protrusion 42 is engaged with the fixing groove 115, the rotation operation knob 83 is connected to the probe main body 30. Is done.

  Therefore, the ultrasonic treatment apparatus having the above configuration has the following effects. That is, in the ultrasonic treatment apparatus according to the present embodiment, the protrusion 42 of the rubber lining 41 that connects the rotary operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 is formed integrally with the probe main body 30. Yes. Thereby, the rotation operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 can be connected without providing a separate member.

  Further, the protrusion 42 of the rubber lining 41 that connects the rotation operation knob 83, the probe main body 30, the sheath 52, and the drive pipe 53 is formed of rubber that is an elastic member. Thereby, it is possible to prevent the lateral vibration of the probe main body 30 from being directly transmitted to the sheath 52, the drive pipe 53, and the rotation operation knob 83.

  Furthermore, since the cavity 125 is provided in the protruding portion 42, when a force is applied inward in the radial direction of the probe main body 30, the protruding portion 42 contracts inward in the radial direction of the probe main body 30. Therefore, when the probe main body 30 is inserted into the drive pipe 53, the probe main body 30 is inserted into the drive pipe 53 with the protruding portion 42 elastically deformed into a shape that shrinks in the radial direction of the probe main body 30. Is done. When the probe body 30 is inserted into the drive pipe 53 and the protrusion 42 is inserted to the positions of the fixing hole 70 of the sheath 52, the slide hole 71 of the drive pipe 53, and the fixing groove 115 of the rotation operation knob 83. , Elastic return to the original shape. Thereby, the operation | work which attaches the drive pipe 53, the sheath 52, and the rotation operation knob 83 to the probe main body 30 can be performed easily. By providing the cavity 125 and making the protrusion 42 easily contract inward in the radial direction of the probe main body 30, the workability of the operation of coupling the sheath 52, the probe main body 30, the drive pipe 53 and the rotation operation knob 83 is improved. Can do.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

Next, other characteristic technical matters of the present invention are appended as follows.
Record
(Additional item 1)
A sheath having a distal end and a proximal end;
A probe body that is inserted into the sheath, has a distal end portion and a proximal end portion, and transmits ultrasonic vibrations;
A jaw pivotally supported at the distal end of the sheath;
A probe tip provided at the tip of the probe body and meshing with the jaw;
A drive member that is slidably inserted along the axial direction of the sheath inside the sheath, is connected to the jaw on the distal end side, and performs an opening / closing operation on the probe distal end portion of the jaw by a sliding operation;
Rotation operation means for performing an operation of rotating the sheath, the probe main body, the jaw, the probe tip, and the drive member around the axis of the sheath;
With
The probe body integrally includes the sheath, the probe body, the driving unit, and the rotation operation unit, and includes a coupling unit formed of an elastic member,
The elastic member is elastically deformed in a direction to avoid interference with the sheath side at the time of assembling the probe main body to the sheath side, and elastically returns to the original shape at a normal assembling position. An ultrasonic treatment apparatus, wherein the probe main body is prevented from coming off from a sheath side.

  DESCRIPTION OF SYMBOLS 1 ... Ultrasonic treatment apparatus, 2 ... Insertion part, 3 ... Operation part, 4 ... Treatment part, 10 ... Main body case, 11 ... Probe | oscillator unit integrated probe, 12 ... Vibrator unit, 13 ... Probe, 30 ... Probe main body, 32 ... Probe tip, 41 ... Rubber lining, 42 ... Projection, 43 ... Cut, 50 ... Sheath body, 51 ... Jaw, 52 ... Sheath, 53 ... Drive pipe, 70 ... Fixing hole, 71 ... Slide hole, 83 ... Rotation operation knob, 115 ... Fixed groove, 125 ... Cavity.

Claims (4)

A tubular sheath;
A probe body that is inserted into the sheath and transmits ultrasonic vibrations;
A jaw rotatably attached to the distal end of the sheath;
A probe tip provided at the tip of the probe body;
A drive member that is slidably inserted along the axial direction of the sheath into the sheath, is connected to the jaw on the distal end side, and performs an opening / closing operation on the probe distal end portion of the jaw by a sliding operation;
Rotation operation means for performing an operation of rotating the sheath, the probe main body, the jaw, the probe tip, and the drive member around the axis of the sheath;
Provided in the probe main body, when the probe main body is assembled in the sheath, the sheath, the probe main body, and the driving means are elastically deformed and elastically restored to the original shape at a normal assembly position. And connecting means for integrally connecting the rotation operating means;
An ultrasonic treatment apparatus comprising: The connecting means is formed by rubber lining on the outer peripheral surface of the probe main body, and includes one or more protrusions protruding outward in the radial direction of the probe main body,
The ultrasonic treatment apparatus according to claim 1, wherein the protrusion is engaged with the sheath, the drive unit, and the rotation operation unit.   The ultrasonic treatment apparatus according to claim 2, wherein the protrusion has a cut in a portion opposite to an insertion direction of the probe main body.   The ultrasonic treatment apparatus according to claim 2, wherein the protrusion has a cavity in the center.

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